Mastering Ratio Tables and Unit Ratios

If the ratio of squirrels to birds is 4 to 9, how many birds are there if there are 12 squirrels?

• 18

• 27

• 36

• 45

What is the unit ratio of squirrels per bird if the original ratio is 4 squirrels to 9 birds?

• 4/9

• 1/9

• 9/4

• 1/4

Given the ratio of pencils to erasers is 5 to 3, how many erasers are there if there are 15 pencils?

• 15

• 12

• 9

• 6

What is the unit ratio of pencils per eraser if the original ratio is 5 pencils to 3 erasers?

• 1/3

• 1/5

• 3/5

• 5/3

If 5 donuts cost $12.35, what is the cost of one donut?

• $2.47

• $2.50

• $2.60

• $2.70

How many donuts can you buy with $1 if 5 donuts cost $12.35?

• 0.7

• 0.6

• 0.5

• 0.4

If the ratio of teachers to students is 1 to 24, how many students are there if there are 6 teachers?

• 144

• 160

• 150

• 120

What is the unit ratio of students per teacher if the original ratio is 1 teacher to 24 students?

• 12/1

• 1/12

• 1/24

• 24/1

If the ratio of lacrosse balls to tennis balls is 5 to 2, how many lacrosse balls are there if there are 14 tennis balls?

• 20

• 25

• 35

• 30

What is the unit ratio of lacrosse balls per tennis ball if the original ratio is 5 lacrosse balls to 2 tennis balls?

• 1/5

• 1/2

• 2/5

• 5/2